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77-626 <br />Robert H. Mason, Inc. -4- February 6, 1978 <br />required for a suitable drainfield. However, the average <br />of tests P-18 and P-27 through P-29 was slightly less than <br />60 mpi. At a rate of 60 mpi, a minimum of 330 square feet <br />of absorptive area per bedroom is required. For the proposed <br />3-bedroom house, the total required absorption area would <br />then be 990 square feet. This can be provided by a total <br />of 5 drain lines, each 80 feet in length, 2'-6" in width, and <br />spaced 7 feet center -to -center. Our recommended design <br />system is illustrated on he attached sketch. <br />Also shown on the sketch are the locations for two future <br />lines. With the addition of these two future lines, the <br />d rain`ield is calculated to be capable of supporting an <br />additional bedroom. Thus, the drainfield as it is pr^sently <br />located has the capacity for future expansion. <br />As an alterate effluent disposal system, we suggest the area <br />immediately east of the proposed drainfield. Although perco- <br />lation tests have not, as yet, been conlucted in this area, <br />we feel that it has potential for effluent disposal, provided <br />a mound system of adequate dimensions and construction is <br />provided. <br />If you have any questions regarding this report, or if we <br />may be of further service on this project, please contact as <br />at your convenience. <br />Very truly yours, <br />BRAUN ENGINEERING TESTING, INC. <br />L� /=ld A. Shaffer, <br />Materials Engineer <br />IL s <br />Vi:e Presiuent - Engineering <br />RAS/CGK:skh <br />8RAHn_J <br />The content it Ihis repoII ano supporting documents are for th.. exclusive use of the add,essee In the absence of our prmr ordlen app•oval ENGINEERING <br />we make no represenlation and assume no respons,bd-ly to any other parhes regaid,ng such tomlenl <br />